Transmission unit for power shafts



WITNESSES luvs/W01? C. 51V v05 J. C. SNYDER.

TRANSMISSION UNIT FOR POWER SHAFTS.

APPLICATION FILED APR. 23, 1921.

Patnted Apr. 25, 1-922.

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ck I I If Q25 ATTORNEYS J. C. SNYDER. TRANSMISSION UNIT FOR POWER SHAFTS. APPLICATION FILED APR. 23. 1921.

1 ,413,943. Patented Apr. 25,1922.

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ATTORNEYS of example in stares- JESSE c. SNYDER, orraosmn'one, MARYLAND.

Application filed April 23, 1921. Serial No. 463,'7 92,

T 0 all whom it may concern:

Be it known that I, JESSE C. SNYDER, a citizen of the United States, and a resident of F rostburg, in the county of Allegany and State of Maryland, have invented centain new and useful Improvements in Transmission Units for Power Shafts, of which the following is a specification. I

This invention relates to "a transmission unit for power shafts.

1 The object of the invention is to provide a transmission unit of the above character which may be separately associated with a power shaft, and operated in conjunction with another transmission unit connected with the same shaft in such a mannerthat an additional driving speed of said shaft ma befhad.

- t may be here mentioned that my invention is particularly adapted for automobiles, and particularly such as the Ford type or manufacture in which the transmission unit permits only a high speed and low speed of.

the driv'ingshaft to be had. I,

In carrying out the present invention it is contemplated providing another transmissi on unit for the driving shaft of such a construction that an intermediate speed of the driving shaft can be had when'desired.

The present invention is illustrated by way the accompanying drawings, in which:

Figure 1 is a detail plan viewshowing my invention when incorporated with the drive I shaft of a Ford automobile,

Figure 2 is a vertical longitudinal section of my invention showing the parts'of same in operative position,

Figure 3 1s a view similar to that shown in Figure 2, but showing the parts of the invention in their non-operative position,

Figures 4:, 5 and Gare transverse sections I takensubstantially on the lines 4;4=,'55,

and 66, respectively of Figure 2;

Referring to the drawings -more particularly, 10 indicates the side frame members of the automobile, 11 the exhaustpipe,

12 the universal joint housing or teasing, and 13 the radius rods. The usual transmission gearing is of course located forward to, the universal coupling asjis well known. In the .present instance the drive shaft which extends from the universal coupling to the difierential is divided as at 14 to form a forward power shaft section15 and a rearward shaft section 16. Both shaft sections The housing sections are also each formed V rimnsmrssron UNIT r012. rowan snares.

Specification of Letters Patent. Patented Apr. 25, 1922. i

-of-the shaft sections 15 and 16,'as shown,

in F igures 2 and 8. At a point ear the rear end ofthe shaft section 15 t ere is keyed a pinion 1 9. The forward end of the shaft section 16 is surrounded by a sleeve 20,'said sleeve also telescoping a portion of the rear end of the shaft section 15. The sleeve 20 issecured against movement with respect to the shaft section '16, by means of a pin 21, while the shaft 15 is free to revolvewithinlthe sleeve. On the forward end of the sleeve 20 there is formed a plurality of radial arms. 22, said arms having each formed on their outer ends a bearing-23'. In each of the bearings 23 is journaled a stub shaft 24, and-each of said stub shafts have formed therewith a gear '25, each of which are adapted to mesh with the pinion 19 car; riedupon the power shaft section 15. The stub shafts 24 also slightly extend from the forward sides of the gears 25', 'as shown at I 26, the purpose of which will later become evident.

having formed therewith an internal ring gear 29 with which the gears 25 are adapted to continually mesh. The forward end of the sleeve 27 is normally in spaced relation 1' with the rear ends of the tubular member 18 .and bearing, sleeve 17 which surround the projecting portions 26 of the stub shafts 24, 1 0

A pairof complemental casing or housing sections 31 and 32 encircle the ring gear 29, said housing sections having bolting flanges 33" by which they maybe secured together by the means ofbolts, as indicated at 34;

with an extended hub portion 35 which telescope thetubular ifnembers 18, as shown in) Figures 2 and 3. I v The forward houslng section 32 is'se'cured Forward to the pinion 19 there is posisitione'd upon the power shaft section 15 a sleeve 27 said sleeve terminating at its rear end in an annular flange 28, and said flange against rotation with-respect to the forward tubular member 18 by the means of a set i screw'as indicated at 30. Also the hub por- In the sleeve 27 there is provided an'annular groove 37 in which there is positioned a yoke 38, said yoke having connected therement with respect to the gears 25.

pedal being suitably pivoted at 15.

w1th a rod. 39 which extends through an opening iOprovided in the hub portion of the forward housing section. 32. The forward end of the rod 39 is suitably connected to the "lower end of a foot pedal 41, said a central point thereof to the one side of the universal coupling housing 12 as shown in Figure 1. Also there, is provided a coil spring 42 which has one of its endsconnected'w ith the rod 39 and its other end with the casing 12 and adapted to normally urge the rod 39 in a forward direction} In the operation of the present device, assuming that the parts thereof have the position as shown in Figure 3,,the operation thereof will be as follows: The powershaft section 15 will of course be driven either at a high or low rate of speeddeperidingupon the manner 1n which the "main transmission associated therewith'has been-operated. In

either instance theforw ard power shaft sect-ion 15 .and rear section 16' will be directly connected by the present transmission u'nlt, this for the reason that the ring gear 29 has been moved in formed the hub portion thereof engage each projecting portion 26 of stub shafts 24: and said ring gear is locked against moveaction of the pinion 19would then be to lock the gears 25' and the ring gear 29 as a whole and the same would move or rotate as a unit,

and thereby transmit the rotative 'niotion'of at high spee cause the gears ring tive\motion to the rear shaft section 1 6, at.

shaft section 15 is rotated,

the shaft'section 15 to the rear shaft section 16, direct. As before stated, this would occur when the/ power shaft section 15 was connected for either high speed or low speed *through the main transmission. When it is desired'to' obtain-an intermediate speed" for the drive shaft the main trans 'inission is o erated fordriving the shaft At the same time the-pedal 41isoperated for movin 'the' sleeve 23? forwardly sothat the openings formed in the flange 28 thereof will be engaged by the pins 36, and thus lock the ring gear 29 against rotative movement When this occurs, the

7 gears 25. wi ll -of course still remain in mesh withthe ring 'gear 7 29 due to the width of said ring. gear. The turning of the power ,shaftsection 15 through the pinion 19 will 25 to track upon the internal gear 29, andin this way transmit rotaless speed than that at which the forward the speed of the position so that the openings The to be moved lon raiaeea rear shaft section 16 being such that it may be called an intermediate speed.

While I have shown and described the preferred form of my invention it is to be understood that I'am aware of the fact that the construction, combination and arrangement of parts may be changed by those skilled in the art without departing from the spirit of my invention as indicated by the appended claims.

I claim: v

. 1. In combination, a power shaft, a second shaft in end alignment with the power shaft, a pinion secured'to the power shaft adjacent its end opposing the second shaft, a sleeve secured on the forward or opposing end of the second shaft, a spider formed upon the forward-end of the sleeve for rotatably suppo-rti g a plurality of pinions arranged in circular'formation, an internal ring gear rotatably and slidably supported by the shaft, a pinion secured to the power shaft adjacent its, end opposing the second shaft,

a sleevesecured upon the forward or opposing end of the second shaft and havi a portion extending forwardly for j onrniaf ing a rear end portion of the power shaft,

a spiderformed uponthe forward end of the sleeve for rotatably supportin a plurality of pinions arranged in circuIar forma-J tion, an internal ring ear rotatably and sl-idably carried ,by sai power shaft for-' ward to said stantly mesh with said pinions and-adapted I gitudjnally of the power shaft a predetermined degree in either direca portion extending forwardly for journaling a rear end portionof the power shaft, a spider formed upon the forward end of the sleevefor rotatably supporting a plurality'of pinions arranged in circular formation, an internal ring ear rotatably and slidably carried by saif power shaft forward to 'said pinion and adapted to con- 130 inion and adapted to' contion without disengagement with said pin-' said internal ring gear having a web poradapted to enter the opening in the webof said ring gear when said ring gear is moved to its rearward position. i

4. In combination, a powershaft, a second shaft in end alignment therewith, a pinion carried by the power shaftfa sleeve secured to the opposing end of the second shaft, a plurality of radial arms formed with said sleeve, a pinion rotatably supported the outer end of each arm and disforwardly thereto and eachv pinion adaptedto continuously mesh withthe pinion carried by the power shaft, a stub shaft nal ring gear surrounding the last named pinions and adapted to continuously mesh therewith and also adapted to permit lateral movement thereof without disengaging from said'pinions, said ring gear having its one end closed by its Web and said webv being formed with a plurality of openings adapted to receive the projecting stub shafts from the pinions carried by the radial arms when said ring gear is moved to its rearmost position, a stationary housing surrounding the ring gear, and studs projecting from the innor and forward wall ofthe housing adapted to enter the opening in the web of said ring ear, when said ring gear is moved forward y.

JESSE o. "SNYDER. 

